/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2011, Red Hat, Inc., and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.as.logging.resolvers;

import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.dmr.ModelNode;

/**
 * Date: 15.12.2011
 *
 * @author <a href="mailto:jperkins@redhat.com">James R. Perkins</a>
 */
public class HandlerResolver implements ModelNodeResolver<Set<String>> {

    public static final HandlerResolver INSTANCE = new HandlerResolver();

    private HandlerResolver(){}

    @Override
    public Set<String> resolveValue(final OperationContext context, final ModelNode value) throws OperationFailedException {
        if (value.isDefined()) {
            final List<ModelNode> handlers = value.asList();
            final Set<String> names = new HashSet<String>(handlers.size());
            for (ModelNode handler : handlers) {
                names.add(handler.asString());
            }
            return names;
        }
        return Collections.emptySet();
    }
}
